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https://github.com/topjohnwu/Magisk.git
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42 lines
1.1 KiB
C++
42 lines
1.1 KiB
C++
#include <sys/mount.h>
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#include <magisk.hpp>
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#include <utils.hpp>
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#include "deny.hpp"
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using namespace std;
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static void lazy_unmount(const char* mountpoint) {
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if (umount2(mountpoint, MNT_DETACH) != -1)
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LOGD("denylist: Unmounted (%s)\n", mountpoint);
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}
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#define TMPFS_MNT(dir) (mentry->mnt_type == "tmpfs"sv && str_starts(mentry->mnt_dir, "/" #dir))
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void revert_unmount() {
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vector<string> targets;
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// Unmount dummy skeletons and MAGISKTMP
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targets.push_back(MAGISKTMP);
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parse_mnt("/proc/self/mounts", [&](mntent *mentry) {
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if (TMPFS_MNT(system) || TMPFS_MNT(vendor) || TMPFS_MNT(product) || TMPFS_MNT(system_ext))
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targets.emplace_back(mentry->mnt_dir);
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return true;
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});
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for (auto &s : reversed(targets))
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lazy_unmount(s.data());
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targets.clear();
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// Unmount all Magisk created mounts
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parse_mnt("/proc/self/mounts", [&](mntent *mentry) {
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if (str_contains(mentry->mnt_fsname, BLOCKDIR))
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targets.emplace_back(mentry->mnt_dir);
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return true;
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});
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for (auto &s : reversed(targets))
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lazy_unmount(s.data());
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}
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